346 lines
11 KiB
C
346 lines
11 KiB
C
/* $NetBSD: mlyvar.h,v 1.1 2001/07/30 19:59:07 ad Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran, Thor Lancelot Simon, and Eric Haszlakiewicz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 2000, 2001 Michael Smith
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* Copyright (c) 2000 BSDi
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from FreeBSD: mlyvar.h,v 1.3 2001/07/14 00:12:22 msmith Exp
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*/
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#ifndef _PCI_MLYVAR_H_
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#define _PCI_MLYVAR_H_
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/*
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* The firmware interface allows for a 16-bit command identifier. We cap
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* ourselves at a reasonable limit. Note that we reserve a small number of
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* CCBs for control operations.
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*/
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#define MLY_MAX_CCBS 256
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#define MLY_CCBS_RESV 4
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/*
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* The firmware interface allows for a 16-bit s/g list length. We limit
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* ourselves to a reasonable maximum.
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*/
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#define MLY_MAX_SEGS 17
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#define MLY_SGL_SIZE (MLY_MAX_SEGS * sizeof(struct mly_sg_entry))
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#define MLY_MAX_XFER ((MLY_MAX_SEGS - 1) * PAGE_SIZE)
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/*
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* The interval at which we poke the controller for status updates (in
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* seconds).
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*/
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#define MLY_PERIODIC_INTERVAL 5
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/*
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* Command slot regulation. We can't use slot 0 due to the memory mailbox
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* implementation.
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*/
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#define MLY_SLOT_START 1
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#define MLY_SLOT_MAX (MLY_SLOT_START + MLY_MAX_CCBS)
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/*
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* Per-device structure, used to save persistent state on devices.
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*
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* Note that this isn't really Bus/Target/Lun since we don't support lun !=
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* 0 at this time.
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*/
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struct mly_btl {
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int mb_flags;
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int mb_state; /* See 8.1 */
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int mb_type; /* See 8.2 */
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/* Physical devices only. */
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int mb_speed; /* Interface transfer rate */
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int mb_width; /* Interface width */
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};
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#define MLY_BTL_PHYSICAL 0x01 /* physical device */
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#define MLY_BTL_LOGICAL 0x02 /* logical device */
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#define MLY_BTL_PROTECTED 0x04 /* I/O not allowed */
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#define MLY_BTL_TQING 0x08 /* tagged queueing */
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#define MLY_BTL_SCANNING 0x10 /* scan in progress */
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#define MLY_BTL_RESCAN 0x20 /* need to re-scan */
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/*
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* Per-command context.
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*/
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struct mly_softc;
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struct mly_ccb {
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union {
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SLIST_ENTRY(mly_ccb) slist;
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SIMPLEQ_ENTRY(mly_ccb) simpleq;
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} mc_link; /* list linkage */
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u_int mc_slot; /* command slot we occupy */
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u_int mc_flags; /* status flags */
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u_int mc_status; /* command completion status */
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u_int mc_sense; /* sense data length */
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int32_t mc_resid; /* I/O residual count */
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union mly_cmd_packet *mc_packet;/* our controller command */
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bus_addr_t mc_packetphys; /* physical address of the mapped packet */
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void *mc_data; /* data buffer */
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size_t mc_length; /* data length */
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bus_dmamap_t mc_datamap; /* DMA map for data */
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u_int mc_sgoff; /* S/G list offset */
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void (*mc_complete)(struct mly_softc *, struct mly_ccb *);
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void *mc_private;
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};
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#define MLY_CCB_DATAIN 0x01
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#define MLY_CCB_DATAOUT 0x02
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#define MLY_CCB_MAPPED 0x04
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#define MLY_CCB_COMPLETE 0x08
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/*
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* Per-controller context.
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*/
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struct mly_softc {
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/* Generic device info. */
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struct device mly_dv;
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bus_space_handle_t mly_ioh;
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bus_space_tag_t mly_iot;
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bus_dma_tag_t mly_dmat;
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void *mly_ih;
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/* Scatter-gather lists. */
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struct mly_sg_entry *mly_sg;
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bus_addr_t mly_sg_busaddr;
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bus_dma_tag_t mly_sg_dmat;
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bus_dmamap_t mly_sg_dmamap;
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bus_dma_segment_t mly_sg_seg;
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/* Memory mailbox. */
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struct mly_mmbox *mly_mmbox;
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bus_addr_t mly_mmbox_busaddr;
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bus_dma_tag_t mly_mmbox_dmat;
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bus_dmamap_t mly_mmbox_dmamap;
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bus_dma_segment_t mly_mmbox_seg;
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u_int mly_mmbox_cmd_idx;
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u_int mly_mmbox_sts_idx;
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/* Command packets. */
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union mly_cmd_packet *mly_pkt;
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bus_addr_t mly_pkt_busaddr;
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bus_dma_tag_t mly_pkt_dmat;
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bus_dmamap_t mly_pkt_dmamap;
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bus_dma_segment_t mly_pkt_seg;
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/* Command management. */
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struct mly_ccb *mly_ccbs;
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SLIST_HEAD(,mly_ccb) mly_ccb_free;
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SIMPLEQ_HEAD(,mly_ccb) mly_ccb_queue;
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u_int mly_ncmds;
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/* Controller hardware interface. */
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u_int mly_hwif;
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u_int mly_doorbell_true;
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u_int mly_cmd_mailbox;
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u_int mly_status_mailbox;
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u_int mly_idbr;
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u_int mly_odbr;
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u_int mly_error_status;
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u_int mly_interrupt_status;
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u_int mly_interrupt_mask;
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/* Controller features, limits and status. */
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u_int mly_state;
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struct mly_ioctl_getcontrollerinfo *mly_controllerinfo;
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struct mly_param_controller *mly_controllerparam;
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struct mly_btl mly_btl[MLY_MAX_CHANNELS][MLY_MAX_TARGETS];
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/* Health monitoring. */
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u_int mly_event_change;
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u_int mly_event_counter;
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u_int mly_event_waiting;
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struct proc *mly_thread;
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/* SCSI mid-layer connection. */
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struct scsipi_adapter mly_adapt;
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struct scsipi_channel mly_chans[MLY_MAX_CHANNELS];
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u_int mly_nchans;
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};
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#define MLY_HWIF_I960RX 0
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#define MLY_HWIF_STRONGARM 1
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#define MLY_STATE_OPEN 0x01
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#define MLY_STATE_MMBOX_ACTIVE 0x02
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#define MLY_STATE_INITOK 0x04
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/*
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* Register access helpers.
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*/
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static __inline__ u_int8_t mly_inb(struct mly_softc *, int);
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static __inline__ u_int16_t mly_inw(struct mly_softc *, int);
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static __inline__ u_int32_t mly_inl(struct mly_softc *, int);
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static __inline__ void mly_outb(struct mly_softc *, int, u_int8_t);
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static __inline__ void mly_outw(struct mly_softc *, int, u_int16_t);
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static __inline__ void mly_outl(struct mly_softc *, int, u_int32_t);
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static __inline__ int mly_idbr_true(struct mly_softc *, u_int8_t);
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static __inline__ int mly_odbr_true(struct mly_softc *, u_int8_t);
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static __inline__ int mly_error_valid(struct mly_softc *);
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static __inline__ u_int8_t
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mly_inb(struct mly_softc *mly, int off)
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{
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bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 1,
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BUS_SPACE_BARRIER_WRITE | BUS_SPACE_BARRIER_READ);
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return (bus_space_read_1(mly->mly_iot, mly->mly_ioh, off));
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}
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static __inline__ u_int16_t
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mly_inw(struct mly_softc *mly, int off)
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{
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bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 2,
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BUS_SPACE_BARRIER_WRITE | BUS_SPACE_BARRIER_READ);
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return (bus_space_read_2(mly->mly_iot, mly->mly_ioh, off));
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}
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static __inline__ u_int32_t
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mly_inl(struct mly_softc *mly, int off)
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{
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bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 4,
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BUS_SPACE_BARRIER_WRITE | BUS_SPACE_BARRIER_READ);
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return (bus_space_read_4(mly->mly_iot, mly->mly_ioh, off));
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}
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static __inline__ void
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mly_outb(struct mly_softc *mly, int off, u_int8_t val)
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{
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bus_space_write_1(mly->mly_iot, mly->mly_ioh, off, val);
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bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 1,
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BUS_SPACE_BARRIER_WRITE);
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}
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static __inline__ void
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mly_outw(struct mly_softc *mly, int off, u_int16_t val)
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{
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bus_space_write_2(mly->mly_iot, mly->mly_ioh, off, val);
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bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 2,
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BUS_SPACE_BARRIER_WRITE);
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}
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static __inline__ void
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mly_outl(struct mly_softc *mly, int off, u_int32_t val)
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{
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bus_space_write_4(mly->mly_iot, mly->mly_ioh, off, val);
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bus_space_barrier(mly->mly_iot, mly->mly_ioh, off, 4,
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BUS_SPACE_BARRIER_WRITE);
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}
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static __inline__ int
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mly_idbr_true(struct mly_softc *mly, u_int8_t mask)
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{
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u_int8_t val;
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val = mly_inb(mly, mly->mly_idbr) ^ mly->mly_doorbell_true;
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return ((val & mask) == mask);
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}
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static __inline__ int
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mly_odbr_true(struct mly_softc *mly, u_int8_t mask)
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{
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return ((mly_inb(mly, mly->mly_odbr) & mask) == mask);
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}
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static __inline__ int
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mly_error_valid(struct mly_softc *mly)
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{
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u_int8_t val;
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val = mly_inb(mly, mly->mly_error_status) ^ mly->mly_doorbell_true;
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return ((val & MLY_MSG_EMPTY) == 0);
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}
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/*
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* Bus/target/logical ID-related macros.
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*/
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#define MLY_LOGDEV_ID(mly, bus, target) \
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(((bus) - (mly)->mly_controllerinfo->physical_channels_present) * \
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MLY_MAX_TARGETS + (target))
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#define MLY_LOGDEV_BUS(mly, logdev) \
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(((logdev) / MLY_MAX_TARGETS) + \
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(mly)->mly_controllerinfo->physical_channels_present)
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#define MLY_LOGDEV_TARGET(mly, logdev) \
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((logdev) % MLY_MAX_TARGETS)
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#define MLY_BUS_IS_VIRTUAL(mly, bus) \
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((bus) >= (mly)->mly_controllerinfo->physical_channels_present)
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#define MLY_BUS_IS_VALID(mly, bus) \
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(((bus) < (mly)->mly_nchans))
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#endif /* !defined _PCI_MLYVAR_H_ */
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